Coupling constants 1J(15N,31P) as a probe for the conformational equilibria of 2-amino-substituted 1,3,2λ5-oxazaphosphinan-2-ones

Tapio Viljanen, Karel D. Klika, Ferenc Fülöp, Kalevi Pihlaja

Research output: Article

1 Citation (Scopus)

Abstract

The 15N NMR spectra of both P(2) diastereomers of the trans-fused 2-bis(2-chloroethyl)amino-3,4,4a,5,6,7,8,8a-octahydro-1,3,2λ 5-benzoxazaphosphinin-2-ones and their 3-methyl and 3-benzyl derivatives have been measured. Depending on the P(2) configuration, the coupling constants 1J(15N,31P) vary markedly. The applicability of the coupling between exocyclic nitrogen and phosphorus for determination of the heteroring conformation is discussed.

Original languageEnglish
Pages (from-to)1479-1481
Number of pages3
JournalJournal of the Chemical Society. Perkin Transactions 2
Issue number7
Publication statusPublished - dec. 1 1997

ASJC Scopus subject areas

  • Chemistry(all)

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